Squashed 'external/pure_doom/PureDOOM/' content from commit 5694fa4

git-subtree-dir: external/pure_doom/PureDOOM
git-subtree-split: 5694fa42089714cb3c9edc1c8e10e4e6b6e9adb9

src/DOOM/m_bbox.c

@@ -0,0 +1,50 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// $Id:$
+//
+// Copyright (C) 1993-1996 by id Software, Inc.
+//
+// This source is available for distribution and/or modification
+// only under the terms of the DOOM Source Code License as
+// published by id Software. All rights reserved.
+//
+// The source is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
+// for more details.
+//
+// $Log:$
+//
+// DESCRIPTION:
+//        Main loop menu stuff.
+//        Random number LUT.
+//        Default Config File.
+//        PCX Screenshots.
+//
+//-----------------------------------------------------------------------------
+
+
+#include "doom_config.h"
+
+#include "m_bbox.h"
+
+
+void M_ClearBox(fixed_t* box)
+{
+    box[BOXTOP] = box[BOXRIGHT] = DOOM_MININT;
+    box[BOXBOTTOM] = box[BOXLEFT] = DOOM_MAXINT;
+}
+
+
+void M_AddToBox(fixed_t* box, fixed_t x, fixed_t y)
+{
+    if (x < box[BOXLEFT])
+        box[BOXLEFT] = x;
+    else if (x > box[BOXRIGHT])
+        box[BOXRIGHT] = x;
+    if (y < box[BOXBOTTOM])
+        box[BOXBOTTOM] = y;
+    else if (y > box[BOXTOP])
+        box[BOXTOP] = y;
+}